Import alignment from csv (#6234)

* Start of the official alignment API

* Import alignment into bonsai model using CSV file

src/ifcopenshell-python/ifcopenshell/api/alignment/get_axis_subcontext.py

@@ -0,0 +1,40 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2025 Thomas Krijnen <thomas@aecgeeks.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import ifcopenshell
+import ifcopenshell.util.representation
+import ifcopenshell.api.context
+from ifcopenshell import entity_instance
+
+
+def get_axis_subcontext(file: ifcopenshell.file) -> entity_instance:
+    """
+    Returns the IfcGeometricRepresentationSubContext for Model, Axis, MODEL_VIEW. If one does not exist, it is created.
+    """
+    axis_geom_subcontext = ifcopenshell.util.representation.get_context(file, "Model", "Axis", "MODEL_VIEW")
+    if axis_geom_subcontext == None:
+        geometric_representation_context = ifcopenshell.api.context.add_context(file, context_type="Model")
+        axis_geom_subcontext = ifcopenshell.api.context.add_context(
+            file,
+            context_type="Model",
+            context_identifier="Axis",
+            target_view="MODEL_VIEW",
+            parent=geometric_representation_context,
+        )
+
+    return axis_geom_subcontext